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本文介绍循环系统综合调节的概况。循环调节中周围组织的基本作用体内约75％的局部组织血流,控制于代谢性自发调节的机理。其控制局部血流的最重要代谢因素为氧。当局部的氧分压剧降组织血供不足时,可通过有效的反馈使局部血管扩张。组织释放的扩血管物质,目前多数认为是腺甙。此外,缺氧后从组织释放的钾离子、乳酸、组织胺和三磷酸腺甙等均可引起局部血管扩张。在某些组织中(如脑)二
This article describes the general situation of the circulatory system regulation. Circulatory regulation of the basic role of the surrounding tissue About 75% of the local body tissue blood flow, control the mechanism of metabolic spontaneous regulation. The most important metabolic factor that controls local blood flow is oxygen. When the local partial pressure of oxygen decreased dramatically tissue blood supply, local blood vessels can be effective feedback expansion. Tissue release of vasodilators, the current majority that is adenosine. In addition, potassium ions, lactic acid, histamine and adenosine triphosphate released from tissues after hypoxia can cause local vasodilation. In some organizations (such as the brain) II